"Unlike earlier incarnations, the third Surface runs Windows 8.1 and so can handle legacy Windows programs. That was one of the biggest beefs about the Surface RT and its 2013 follow-up, the Surface 2. Surface 3 buyers will be able to upgrade to Windows 10 free of charge when Microsoft releases the new OS this summer. The Surface 3 features a 10.8-inch screen with a 1920x1280-pixel resolution -- the Pro 3 boasts a 12-in. display with 2160x1440-pixel resolution -- relies on an Intel quad-core Atom processor, and weighs in at 1.4 lbs. (The Surface Pro 3 tips the scales at 1.8 lbs.) The Surface 3 also comes with a one-year subscription to Office 365 Personal, which lists for $70."